Doofus writes: New Scientist has an interesting story about a Japanese effort to reach the Earth's mantle. While some mantle material has been recovered from volcanoes, no pure mantle material has been obtained. (We have moon rocks, but nothing from a few km beneath our feet!) Accompanying the article is a gallery of previous attempts at drilling farther and farther into the Earth's crust.
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 internet speed test! ×